Cutlass L4-138 2.3L VIN A FI HP (1990)
Air Duct: Customer Interest
Heater - Slow to Warm Up or Inadequate Heat
SUBJECT
REDUCED HEATER SYSTEM PERFORMANCE (NEW
HEATER OUTLET DUCT AND PROCEDURE)
MODELS/YEARS
1988-90 CUTLASS SUPREME MODELS
NUMBER:
90-T-58
CORP.REF.NO: 931106R
DATE:
March 1990
SECTION:
1B1
Comments on the above vehicles about heater system performance such as being slow to warm up or inadequate heat may be received from some
customers.
If the heater system is operating properly and the engine temperature is in the operating range, the cause of the condition may be reduced air/heat
distribution from the heater outlet.
This condition may now be addressed by using the following service parts and procedures.
The parts and procedure for the Cutlass Supreme without the performance audio system is as follows:
PARTS
QUANTITY
PART NUMBER
PART NAME
1
52452131
Heater Outlet Duct
26 in.
*06375
3M # 4508 Scotchfoam Black Vinyl
Foam Tape or Equivalent
Purchase Locally
Parts are currently available from GMSPO.
